Dry-ore separator.



W. W. BONSON. DRY ORB SBPARATOR. APPLICATION FILED 111111.25, 1911.

1,073,069. Patented sept. 9, 1913.

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O O OO PO o o C O @.HMMM l 53 305W. A M 7L W. W. BONSON.

DRY ORE SEPARATOR.

APPLICATION FILED 111111.25, 1911.

1,073,069. Patented sep1.9,1913.

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' WILLIAM W. BONSON, OF DUBUQUE, IOWA., ASSIG'NUR T0 BONNIE DRY GONGENTRATGE COMPANY, 0F DUBUQUE, IOWA, A CQRPORATIUN DF HEIZUNM.

DBYDORE SEPEATOR.

Speciication of Lettera Patent.

Watented dept. 9, 1913.

To all :whom t may concert,

c Be 1t known that I,W1LL1AM W. Bonson, citizen of the United States, residing at Dubuque, in the county of Dubuque and State of Iowa, have invented certain new and useful Im rovements in Dry-Ore Separators, of which` the following is a specification.

The object lof my invention is to largely increase the eHective capacity of the dry ore "concentrating `device set out and described in Letters Patent granted and issued to me on the 3rd day of Jan., 1911, and numbered 980,891. In what it consists and lwherein it is dierentiated from said pat-- entwill be set out in the following specification when taken and read in connection with the drawings accompanying the same and forming a part hereof, in which- Figure 1 is a plan view of the table with the gates and bed thereon and means for reciprocating the table. Fig. 2 is a side view o Fig. 1 showing the end and side pitch of the table. Fig. 3 is an enlarged perspective view of the up r surface of the table withpa'rt of the mes cut away. Fig. 4. is a side view showing its double inclinations.

In the drawings the grid 2 is set upon an air box 4 which is mounted on standards 5 securedtgoa foundation 6 and adapted to be reciprocated by power applied to a shaft 8 secured to the standards 5 and all adapted to be operated in substantially the same manner as in said before mentioned patent and hence these parts are not herein specically described.

Referring to the drawings 10 designates the table which has upon it a mesh 12. Upon the mesh 12 are secured ore riilles 15 that are set parallel with each other and in a line with the throw of the table. Over 4the riiiles 15 are secured gangue deiectors 16 which are set at an angle to the riilies 15 and at an angle to the throw ofthe table. Upon the ore riles and substantially at right angles to the riles 15 are set one or gates. In these drawings are shown three gates 18, 20, and 22, which are grooved or cut away at 19 over each riliie 15 and adapted to be adjustedto the top of the riflies or down onto the mesh 12 on the table. The mode of constructing and adjusting the gates may be the same as in the above inentioned patent but I have in there drawings provided a thumb screw 11 having a hook 13 adaplted to engage the side of the gate.

The de ectors 1G referably extend diagonally across the tahle only to the first gate. At the oute side of the table is set another gate 24 which is also ada ted to be adjusted down tothe mesh 12. etween the gates 22 and 211 is formed an ore concentrating bed having the ends of the riiles 15 Contact ing with the gateV 24: at substantially right angles thereto. Over the riilles 15 on the bed are secured retarders 26 at an angle to the riiiles but preferably at a different angle to said riiiies than that of the delectors 16. These retarder-s 26 commence at the gate 24 and extend to within a short distance of the gate 22. At the head 25 which is in reality one side of the table there is sei cured. a hopper 28 adapted to distribute the mass along the head o the table.

The table is set on. an angle to a horizontal planein two directions. It inclines from the side of the hopper 28, toward the gate 24 and also inclines endwise from the end 30 to the end 32 as shown in Figs. 2 and 4. Als the means whereby these inclinations are accomplished and the manner of adjusting the gates form no part of my invention they are not specifically described herein.

The manner of operating my device is substantialy as follows: Power is applied to the, sha t 8 which is attached to one side vor the table and imparts a reciprocating motionnto the table. The air is then turned on through the tube 7 and out into the air boxe: andthe mass is delivered onto the side of the table through the hopper lwhere it falls in Abetween the ore rifHes and gangue deectorsupon the mesh, then'the pressure Vof air upthrough the mass, and the motion of the'fable, immediately stratifies the mass and the ore being heavier than the gano'ue passes to the bottom in between the ri es 15 and' the grgue above the riiies between the gangue d ectors 16. The rapid reciprocating motion of the table throws the ore in a line parallel with the motion of the table and causes it to travel with great rapidity between the riles 15 on account of the unobstructed passage of the ore in the runways between the riiles and the sharp incline of the table toward the outer end of the riiiles. '111e gangue is held back or turned to one side by the angue deflectors and od at the end of the ta 'le at 32. When the mass comes to the first gate18 the gangue has largely been disposed of and this gate is adjusted down slightly below the top of the 'riilles just suflicient to largely skim off the remaining gangue and middlings and, as the table slants toward the end 32, the gangue will pass off in that direction and the ore will pass under the gate and come to the gate 20. As this `gate 20 is adjusted down below the gate 18, more of the gangue will be stopped and pass oil at the end of the gate 20 while the ore passes under the gate 20 and comes tothe gate 22. This gate has been previously adjusted down close to the mesh on the table, and more of the gangue and middlings will be forced oil along the side of the gate 22 and at the end of said gate. lVhile the ore passes under the gate 22 the ore and whatever may be left of the gangue and middlings will then pass -directly to the gate 24 which has been'previously adjusted down onto the mesh on the table and will not allow anything to pass out beneath it. There will then be formed an ore concentrating bed between the riflles 15 and the retarders 26 and when the bed is formed, so that the ore will come to the top of the riilles and the gangue and the middlings between the retarders 26, the gangue and middlings will pass oli around the ends of the retarders 26 and be delivered oil from the end of the table neXt to the gate 22. The operator then raises the gate 24 just sufliciently to carry away the pure ore from the bottom of the bed as fast as it is delivered upon the bed from beneath the gate 22.

It lwill be seen by this mode of construction. with the riilles in a line with the throw of the table and parallel to the incline of the table in one direction and the gangue de- Hectors at an angle thereto, that as soon as the air and motion of the table have stratified the mass, bringing the gangue to the top, themotion and sharp pitch toward the` outer end of the riflles will cause the ore to travel at a great rate of speed down in the runways between the riflles and, since the gangue defiectors are set at an angle to the motion of the table and the table is inclined endwise the gangue will be forced from olf the ore to one side', at a great rate of speed. There will however, be as pure a separation as in the former patent above-mentioned, as there is formed substantially the same ore concentrating bed on one side of the table at the end of the ore rillesbut the ore and a small percentage of the'y gangue and middlings will be delivered onto the bed at a vastly increased rapidity lsince it is unobstructed in its passage from the hopper to the concentrating bed'and is aided in its advancing movement by gravity in the pitch of the table and by the throws of the table.

`Having now described my invention what I claim and desire to secure by Letters Pat ent isz- 1.,..In a dry ore separator,a table, a vmesh on the table, means for forcing a current of air through the mesh, means for imparting motion to the table, riflles upon the mesh set substantially in a line with the throw of the table, and deflectors upon theriflles at an angle to the rililes.

2. In a dry ore separator, a table, a mesh on the table, means for forcing a current vof air through the mesh, means for imparting motion to the table, rifiles secured on the meshin substantially a line with rthe throw of the table, deflectors secured on the riilles at an angle thereto, and means for setting the table with the rillles thereon at an angle 4. In a dry ore separator a table, a mesh on the table, means for forcing aicurrent of air through the mesh, means for imparting a throw to the table, rillles on the mesh set parallel to the throw of the table, deflectors on the riiiles at an angle to the riilles, means for dividing the tablev longitudinally and means for forming an ore concentrating bed on one 'division of the table at right angles to the ends of the ore rillies.

- 5. In a dry ore separator, a table, a mesh on the table, means for forcing a current of air through the mesh, means'for imparting motion to the table, riilles on the mesh set in a line with the throw of the table, deflectors on the rimes at an angle to the rimes, means for dividing theltable, and means for forming an ore concentrating bed on one division of the table.

6. `In a dry ore separator, a table provided with a mesh, means for forcing a current of air through the mesh, means for imparting motion to the table, ore riflles upon the mesh set substantially in the direction of the throw of the table, gangue defiectors upon the rifiles and at an angle thereto, a gate dividing the table and at substantially right angles to the ore riflles, means for forming an ore concentrating bed on one division of the table, and means for mounting the table at an angle to a horizontal plane both longitudinally and laterally.

71 In, a dry ore separator, a table set at an angle to a horizontal plane, a mesh on the table, means for forcing a current of air up through the mesh, means for imparting motion to the table, means for dividing the table into two divisions, ore riies set on the mesh on both divisions of the table and in a line parallel with the throw of the table and running at substantially right angles to the means for dividing the table, gangue defiectors set upon one division of the table upon the ore rilies and -at an angle thereto, and means in connection with the ore riilies for forming an ore concentrating bed on the other division ofthe table."

8. In a dry ore separator, a table set at an incline in two directions, a mesh upon the table, means for imparting a throw to the table, ore riflles secured on the mesh a short distance apart and forming ore runways between the riiies in a line in direction with the throw of the table, gangue deflectors set a short distance apart at an angle to the ore rililes and forming gangue runways between said IdeieCtOrS, a gate dividing the table at the end of the gangue deflecto'rs and at an end of the gangue runways, a gate set at the end of the ore runways and at right angles thereto, and means. in connection with said gate and ore riHes for forming an ore concentrating bed on the otherdivision of the table.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM W. BONSON.l Witnesses:

F. W. Comas, M. M. CADY.- 

